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History of the manufacturer  

Gamble-Skogmo, Inc.; Minneapolis, MN

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Name: Gamble-Skogmo, Inc.; Minneapolis, MN    (USA)  
Brand:
Coronado
Abbreviation: gamble-sko
Products: Model types
Summary:

Gamble-Skogmo, Inc.
700 Washington Ave. N., Minneapolis, Minnesota

Brand: Coronado

Coronado-branded tubes can be found under Coronado (tubes).

Not to be confused with Coronado Mfg. Co. of Saint Paul.

Also listed as "Coronado, Minneapolis, Minn., and Los Angeles, Calif." - referring to Gamble-Skogmo and Western Auto Supply Co. respectively, as models have been marketed by both companies under the brand Coronado.

Gamble Stores, Inc. is either a sister or a daughter company (we believe). Radios have appeared in Rider manuals with a date as early as April 1935 but production may have started a few years earlier.

Some models made between 1947 and 1953 have the production season in reverse order preceding the RA model number.

Founded: 1925
Closed: 1982
Production: 1935 -
History:

Reference: University of Minnesota School of Social Work web site. Bertin Gamble and Philip Skogmo were boyhood friends in Arthur, North Dakota (40 miles northwest of Fargo). They were born at the end of the 19th century and grew up together in Arthur. As young men they each came separately to Minnesota and worked in a variety of jobs. In 1920, they pooled their resources, borrowed some money and bought an auto dealership in Fergus Falls, Minnesota. Soon they discovered that the sale of auto parts and accessories was the most profitable part of their car dealership. So, in March 1925, they opened the first Gamble Auto Supply store in St. Cloud. By 1928, they had 55 stores, moved their headquarters to Minneapolis, and were off and running. Eventually, Gamble stores were franchised, and by 1939 there were 1500 Gamble dealers and 300 corporate stores in 24 states.

From the mid 1940s to the end of the 1970s, Gamble and Skogmo diversified their businesses and branched out into many new endeavors, including a discount division, financial services, real estate, and retail businesses such as Aldens mail order company, Womans World Shops, Red Owl Grocery and Snyder Drug stores. At the end of this period of growth, Gamble-Skogmo was the 15th largest retailer in the United States with 4200 outlets and 26,000 employees in 39 states. Following the retirement of Bert Gamble, the company was sold to the Wickes Co. of California. The purchase was highly leveraged, the combined companies struggled, Wickes filed bankruptcy in 1982, and the empire was sold off in pieces.

About the Gamble-Skogmo Fund:
In 1948, Mssrs. Gamble and Skogmo each established family foundations supporting youth, education, health and religious organizations. In 1982, the trustees of the separate foundations voted to merge the two and formed a supporting organization of the Minneapolis Foundation called The B.C. Gamble and P. W. Skogmo Foundation with combined assets of $13,000,000. For 10 years the foundation continued its philanthropy following the spirit of its founders in five focus areas: (1) disadvantaged youth and families; (2) people with disabilities; (3) low-income senior citizens; (4) secondary and higher education; and (5) health care, research and education. As of 1992, the separate foundation became a field of interest fund of the Minneapolis Foundation.


Some models:
Country Year Name 1st Tube Notes
USA  52 43-6485 1N6GT  Vibrator for +B 
USA  52 43-6730 6SK7   
USA  52 43-7660B 6BA6   
USA  41 0-556 1A7GT  Line supply is AC/DC. Built in loop antenna. 
USA  49/50 Coronado 05RA1-43-7755A 6BE6  The Coronado model 05RA1-43-7755A and 05RA1-43-7755B by Gamble-Skogmo Inc., 15 N. 8th St.,... 
USA  49/50 Coronado 05RA1-43-7755B 6BE6  The Coronado model 05RA1-43-7755A and 05RA1-43-7755B by Gamble-Skogmo Inc., 15 N. 8th St.,... 
USA  50 05RA1-43-7901A 6BA6  Built in loop antenna. 
USA  49/50 Coronado 05RA2-43-8515A 12AT7  The Coronado 05RA2-43-8515A mady by Gamble-Skogmo Ind. is an AC operated AM-FM superhetero... 
USA  50 05RA33-43-5016A (05 RA 33435016A 6BA6  Vibrator for +B 
USA  49/50 Coronado 05RA33-43-8120A [Bantham] 12BE6  The Coronado 05RA33-43-8120A by Gamble-Skogmo, Ind. ia an AC-DC opersted superheterodyne r... 
USA  51 Coronado Clipper 05RA33-43-8136A 12BE6  The Coronado Clipper 05RA33-43-8136A is an AC/DC operated 5 tube BC band receiver. ... 
USA  51 05RA33-43-8137A 12BE6  The Coronado 05RA33-43-8137A is an AC/DC operated 5 tube BC band receiver.  BC ban... 

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